1995 TOYOTA SUPRA wiring

WIRING DIAGRAM
AT2±76± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

WIRING DIAGRAM
INSPECTION PROCEDURE
Check resistance between terminals SP2+ and SP2± of ECM connector.
Proceed to next circuit inspection shown on matrix
chart (See page AT2±64).
Connect the Check Harness A to the ECM. (See
page EG±510).
Check resistance between terminals SP2
+ and
SP2± of ECM.
Resistance: 560 Ð 680

Go to step [2].
AT2±80± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

WIRING DIAGRAM
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTINGAT2±83

WIRING DIAGRAM
AT2±86± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

WIRING DIAGRAM
INSPECTION PROCEDURE
Check resistance between terminals NCO+ and NCO± of ECM.
Connect the Check Harness A to the ECM (See
page EG±510).
Check Resistance between terminals NCO
+ and
NCO± of ECM.
Resistance: 560 Ð 680 
Proceed to next circuit inspection shown on ma-
trix chart (See page AT2±64). However, when diag-
nostic trouble code 67 is displayed, check and re-
place ECM.
G to
AT2±90
± A340E (2JZÐGTE) AUTOMATIC TRANSMISSIONTROUBLESHOOTING

Horn Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off in approximately
0.2 sec. cycles. This switches the horn relay on and off, thus the horns blow (See the wiring diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes off and the horn relay switches
off, thus stopping the horns from blowing:
(1) The front LH or RH door is unlocked with a key.
(2) The ignition switch is turned to ACC or ON position.
(3) Approximately 1 minute elapses.
BE±132± BODY ELECTRICAL SYSTEMTHEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM

Theft Deterrent Horn Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, contact (a) and contact (b) in the ECU close alternately in cycles
of approximately 0.2 sec., causing the theft deterrent horn to blow (See the wiring diagram below).
In this condition, if any of the following operations is done, the contact (a) in the ECU opens, thus stopping the
theft deterrent horn from blowing:
(1) The front LH or RH door is unlocked with a key.
(2) The ignition switch is turned to ACC or ON position.
(3) Approximately 1 minute elapses.
BE±134± BODY ELECTRICAL SYSTEM
THEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM

Taillight Control Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off at approximately
0.2 sec. intervals. This switches the taillight control relay on and off, thus flashing the taillights (See the wiring
diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes off and the taillight control
relay switches off, thus stopping the taillights flashing:
(1) The front LH or RH door is unlocked with a key.
(2) The ignition switch is turned to ACC or ON position.
(3) Approximately 1 minute elapses.
BE±138± BODY ELECTRICAL SYSTEMTHEFT DETERRENT AND DOOR LOCK CONTROL SYSTEM